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Finding the Fourth Proportional to 283,801.54, 393,336.69 and 278,487.14

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Solution

The fourth proportional to 283,801.54, 393,336.69 and 278,487.14 is: 385,971.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,801.54 : 393,336.69 = 278,487.14 : x
  2. Step 2: Convert to fraction form
    283,801.54/393,336.69 = 278,487.14/x
  3. Step 3: Cross multiply
    283,801.54x = 393,336.69 × 278,487.14
  4. Step 4: Simplify right side
    283,801.54x = 109,539,209,855.17
  5. Step 5: Solve for x
    x = 109,539,209,855.17/283,801.54
  6. Step 6: Final answer
    x = 385,971.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.